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Status Delivered
Categories Runtime
Created by Guest
Created on Jun 17, 2014

Shared temporary storage statistics in missing SMF data

READQs and WRITEQs to shared TS queues should be included in the DFHTEMP performance class information. This information should be written to additional fields specifically for shared TS queues.

For example:
(TYPE-A, 'TSGETSCT', 4 BYTES)
Number of GET requests issued to shared temporary storage by the user task.
(TYPE-A, 'TSPUTSCT', 4 BYTES)
Number of PUT requests to shared temporary storage issued by the user task.

(TYPE-S, 'TSIOSWTT', 12 BYTES)
Elapsed time for which the user task waited for shared temporary storage I/O.



Although READQs and WRITEQs to shared queues are recorded in Transaction Resource Class Temp Storage there is no information to indicate if the TS queue is using DFHTEMP or a shared TS server. There is a need to add an indicator to the record for the location of the TS queue

For example:
MNR_TSQUEUE_TYPE (TYPE-C, 1 BYTE).

Idea priority High
  • Guest
    Reply
    |
    Dec 11, 2015

    This RFE is satisfied by CICS TS 5.3 which is generally available from December 11th 2015.

    The following following new performance class counters have been added:

    460 (TYPE-A, 'TSGETSCT', 4 BYTES)
    Number of temporary storage GET requests from shared temporary storage issued by the user task.

    461 (TYPE-A, 'TSPUTSCT', 4 BYTES)
    Number of temporary storage PUT requests to shared temporary storage issued by the user task.

    The RFE is correct in that we do account for gets and puts in the resource class records; gets are reported as MNR_TSQUEUE_GET and puts as MNR_TSQUEUE_PUT_AUX!. So no way of telling from monitoring data alone the queue type. To allow users to determine if gets and puts are to shared we have added 2 new counts to accounts for shared TS ops as follows:

    MNR_TSQUEUE_GET_SHR (TYPE-S, 8 BYTES)
    The elapsed time that the user task waited for completion of GET requests to shared temporary storage, issued by the user task for this temporary storage queue. The count part of this field (the low-order 24 bits) contains the number of GET requests to shared temporary storage issued against the temporary storage queue. For more information, see Clocks and time stamps and Transaction wait (suspend) times.

    MNR_TSQUEUE_PUT_SHR (TYPE-S, 8 BYTES)
    The elapsed time that the user task waited for completion of PUT requests to shared temporary storage, issued by the user task for this temporary storage queue. The count part of this field (the low-order 24 bits) contains the number of PUT requests to shared temporary storage issued against the temporary storage queue. For more information, see Clocks and time stamps and Transaction wait (suspend) times.

    In addition we report the number of bytes written to and read to a shared TSQ by the task

    MNR_TSQUEUE_GET_SHR_ITEML (TYPE-A, 4 BYTES)
    The total length of all items obtained from this shared temporary storage queue.

    MNR_TSQUEUE_PUT_SHR_ITEML (TYPE-A, 4 BYTES)
    The total length of all items written to this shared temporary storage queue.

  • Guest
    Reply
    |
    Oct 6, 2015

    This RFE is satisfied by CICS TS 5.3 which was announced on October 5th 2015 with a planned general availability date of December 11th 2015.
    For more information see the announcement letter http://www.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&supplier=897&letternum=ENUS215-363

    The following following new performance class counters have been added to resolve this RFE:

    460 (TYPE-A, 'TSGETSCT', 4 BYTES)
    Number of temporary storage GET requests from shared temporary storage issued by the user task.

    461 (TYPE-A, 'TSPUTSCT', 4 BYTES)
    Number of temporary storage PUT requests to shared temporary storage issued by the user task.

    The RFE is correct in that we do account for gets and puts in the resource class records; gets are reported as MNR_TSQUEUE_GET and puts as MNR_TSQUEUE_PUT_AUX!. So no way of telling from monitoring data alone the queue type. To allow users to determine if gets and puts are to shared we have added 2 new counts to accounts for shared TS ops as follows:

    MNR_TSQUEUE_GET_SHR (TYPE-S, 8 BYTES)
    The elapsed time that the user task waited for completion of GET requests to shared temporary storage, issued by the user task for this temporary storage queue. The count part of this field (the low-order 24 bits) contains the number of GET requests to shared temporary storage issued against the temporary storage queue. For more information, see Clocks and time stamps and Transaction wait (suspend) times.

    MNR_TSQUEUE_PUT_SHR (TYPE-S, 8 BYTES)
    The elapsed time that the user task waited for completion of PUT requests to shared temporary storage, issued by the user task for this temporary storage queue. The count part of this field (the low-order 24 bits) contains the number of PUT requests to shared temporary storage issued against the temporary storage queue. For more information, see Clocks and time stamps and Transaction wait (suspend) times.

    In addition we report the number of bytes written to and read to a shared TSQ by the task

    MNR_TSQUEUE_GET_SHR_ITEML (TYPE-A, 4 BYTES)
    The total length of all items obtained from this shared temporary storage queue.

    MNR_TSQUEUE_PUT_SHR_ITEML (TYPE-A, 4 BYTES)
    The total length of all items written to this shared temporary storage queue.

  • Guest
    Reply
    |
    Oct 5, 2015

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Transaction Processing
    Product - CICS Transaction Server

    For recording keeping, the previous attributes were:
    Brand - WebSphere
    Product family - Transaction Processing
    Product - CICS Transaction Server

  • Guest
    Reply
    |
    Oct 10, 2014

    This is something we would like to address. The RFE is being moved into 'Planned for Future release' status. Please note:
    IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole discretion. Information regarding potential future products is intended to outline our general product direction and it should not be relied on in making a purchasing decision. The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any material, code or functionality. Information about potential future products may not be incorporated into any contract. The development, release, and timing of any future features or functionality described for our products remains at our sole discretion.

  • Guest
    Reply
    |
    Jun 26, 2014

    The requirement for separate request counts for shared TS in the performance and resource class records is a candidate for a future release.
    Please note that the shared temporary storage I/O wait time already exists in the performance record in the DFHTEMP group, field id 178, name TSSHWAIT, and it's also in the resource class records.